Julie Pace: Biden time as Bernie Sanders slumps on biggest day

Two white men in their late-70s will now battle it out to become the standard-bearer for an increasingly diverse Democratic party in the US. Julie Pace reports from Washington

Less than a month ago, Joe Biden’s campaign was in free fall. Even after he mounted a comeback in South Carolina, he confronted the reality of competing in crucial Super Tuesday contests with little money and no discernible campaign infrastructure.